<?php // $Id: edit_xml_file.class.php,v 1.6 2007/10/10 05:25:26 nicolasconnault Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas		http://dougiamas.com  //
//		   (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/// This class will edit one loaded XML file

class edit_xml_file extends XMLDBAction {

	/**
	 * Init method, every subclass will have its own
	 */
	function init() {
		parent::init();

	/// Set own custom attributes

	/// Get needed strings
		$this->loadStrings(array(
			'change' => 'xmldb',
			'edit' => 'xmldb',
			'up' => 'xmldb',
			'down' => 'xmldb',
			'delete' => 'xmldb',
			'vieworiginal' => 'xmldb',
			'viewedited' => 'xmldb',
			'tables' => 'xmldb',
			'statements' => 'xmldb',
			'newtable' => 'xmldb',
			'newtablefrommysql' => 'xmldb',
			'newstatement' => 'xmldb',
			'viewsqlcode' => 'xmldb',
			'viewphpcode' => 'xmldb',
			'reserved' => 'xmldb',
			'backtomainview' => 'xmldb'
		));
	}

	/**
	 * Invoke method, every class will have its own
	 * returns true/false on completion, setting both
	 * errormsg and output as necessary
	 */
	function invoke() {
		parent::invoke();

		$result = true;

	/// Set own core attributes
		//$this->does_generate = ACTION_NONE;
		$this->does_generate = ACTION_GENERATE_HTML;

	/// These are always here
		global $CFG, $XMLDB;

	/// Do the job, setting $result as needed

	/// Get the dir containing the file
		$dirpath = required_param('dir', PARAM_PATH);
		$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);

	/// Get the correct dir
		if (!empty($XMLDB->dbdirs)) {
			$dbdir =& $XMLDB->dbdirs[$dirpath];
			if ($dbdir) {
			/// Only if the directory exists and it has been loaded
				if (!$dbdir->path_exists || !$dbdir->xml_loaded) {
					return false;
				}
			/// Check if the in-memory object exists and create it
				if (empty($XMLDB->editeddirs)) {
					$XMLDB->editeddirs = array();
				}
			/// Check if the dir exists and copy it from dbdirs
				if (!isset($XMLDB->editeddirs[$dirpath])) {
					$XMLDB->editeddirs[$dirpath] = unserialize(serialize($dbdir));
				}
			/// Get it
				$editeddir =& $XMLDB->editeddirs[$dirpath];
				$structure =& $editeddir->xml_file->getStructure();
			/// Add the main form
				$o = '<form id="form" action="index.php" method="post">';
				$o .= '<div>';
				$o.= '	<input type="hidden" name ="dir" value="' . str_replace($CFG->dirroot, '', $dirpath) . '" />';
				$o.= '	<input type="hidden" name ="action" value="edit_xml_file_save" />';
				$o.= '	<input type="hidden" name ="postaction" value="edit_xml_file" />';
				$o.= '	<input type="hidden" name ="path" value="' . s($structure->getPath()) .'" />';
				$o.= '	<input type="hidden" name ="version" value="' . s($structure->getVersion()) .'" />';
				$o.= '	<table id="formelements" class="boxaligncenter">';
				$o.= '	  <tr valign="top"><td>Path:</td><td>' . s($structure->getPath()) . '</td></tr>';
				$o.= '	  <tr valign="top"><td>Version:</td><td>' . s($structure->getVersion()) . '</td></tr>';
				$o.= '	  <tr valign="top"><td><label for="comment" accesskey="c">Comment:</label></td><td><textarea name="comment" rows="3" cols="80" id="comment">' . $structure->getComment() . '</textarea></td></tr>';
				$o.= '	  <tr><td>&nbsp;</td><td><input type="submit" value="' .$this->str['change'] . '" /></td></tr>';
				$o.= '	</table>';
				$o.= '</div></form>';
			/// Calculate the buttons
				$b = ' <p class="centerpara buttons">';
			/// The view original XML button
				$b .= '&nbsp;<a href="index.php?action=view_structure_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;select=original">[' . $this->str['vieworiginal'] . ']</a>';
			/// The view edited XML button
				if ($structure->hasChanged()) {
					$b .= '&nbsp;<a href="index.php?action=view_structure_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;select=edited">[' . $this->str['viewedited'] . ']</a>';
				} else {
					$b .= '&nbsp;[' . $this->str['viewedited'] . ']';
				}
			/// The new table button
				$b .= '&nbsp;<a href="index.php?action=new_table&amp;postaction=edit_table&amp;table=changeme&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['newtable'] . ']</a>';
			/// The new from MySQL button
				if ($CFG->dbfamily == 'mysql') {
					$b .= '&nbsp;<a href="index.php?action=new_table_from_mysql&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['newtablefrommysql'] . ']</a>';
				} else {
					$b .= '&nbsp;[' . $this->str['newtablefrommysql'] . ']';
				}
			/// The new statement button
				$b .= '&nbsp;<a href="index.php?action=new_statement&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['newstatement'] . ']</a>';
			/// The back to main menu button
				$b .= '&nbsp;<a href="index.php?action=main_view#lastused">[' . $this->str['backtomainview'] . ']</a>';
				$b .= '</p>';
				$b .= ' <p class="centerpara buttons">';
			/// The view sql code button
				$b .= '<a href="index.php?action=view_structure_sql&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' .$this->str['viewsqlcode'] . ']</a>';
			/// The view php code button
				$b .= '&nbsp;<a href="index.php?action=view_structure_php&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['viewphpcode'] . ']</a>';
				$b .= '</p>';
				$o .= $b;
			/// Join all the reserved words into one big array
			/// Calculate list of available SQL generators
				$plugins = get_list_of_plugins('lib/xmldb/classes/generators');
				$reserved_words = array();
				foreach($plugins as $plugin) {
					$classname = 'XMLDB' . $plugin;
					$generator = new $classname();
					$reserved_words = array_merge($reserved_words, $generator->getReservedWords());
				}
				sort($reserved_words);
				$reserved_words = array_unique($reserved_words);
			/// Add the tables list
				$tables =& $structure->getTables();
				if ($tables) {
					$o .= '<h3 class="main">' . $this->str['tables'] . '</h3>';
					$o .= '<table id="listtables" border="0" cellpadding="5" cellspacing="1" class="boxaligncenter flexible">';
					$row = 0;
					foreach ($tables as $table) {
					/// Calculate buttons
						$b = '</td><td class="button cell">';
					/// The edit button
						$b .= '<a href="index.php?action=edit_table&amp;table=' . $table->getName() . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['edit'] . ']</a>';
						$b .= '</td><td class="button cell">';
					/// The up button
						if ($table->getPrevious()) {
							$b .= '<a href="index.php?action=move_updown_table&amp;direction=up&amp;table=' . $table->getName() . '&amp;postaction=edit_xml_file' . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['up'] . ']</a>';
						} else {
							$b .= '[' . $this->str['up'] . ']';
						}
						$b .= '</td><td class="button cell">';
					/// The down button
						if ($table->getNext()) {
							$b .= '<a href="index.php?action=move_updown_table&amp;direction=down&amp;table=' . $table->getName() . '&amp;postaction=edit_xml_file' . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['down'] . ']</a>';
						} else {
							$b .= '[' . $this->str['down'] . ']';
						}
						$b .= '</td><td class="button cell">';
					/// The delete button (if we have more than one and it isn't used)
						if (count($tables) > 1 &&
							!$structure->getTableUses($table->getName())) {
							///!$structure->getTableUses($table->getName())) {
							$b .= '<a href="index.php?action=delete_table&amp;table=' . $table->getName() . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['delete'] . ']</a>';
						} else {
							$b .= '[' . $this->str['delete'] . ']';
						}
					/// Detect if the table name is a reserved word
						 if (in_array($table->getName(), $reserved_words)) {
							 $b .= '&nbsp;<a href="index.php?action=view_reserved_words"><span class="error">' . $this->str['reserved'] . '</span></a>';
						 }
						$b .= '</td>';
					/// Print table row
						$o .= '<tr class="r' . $row . '"><td class="table cell"><a href="index.php?action=view_table_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;table=' . $table->getName() . '&amp;select=edited">' . $table->getName() . '</a>' . $b . '</tr>';
						$row = ($row + 1) % 2;
					}
					$o .= '</table>';
				}
			///Add the statements list
				$statements =& $structure->getStatements();
				if ($statements) {
					$o .= '<h3 class="main">' . $this->str['statements'] . '</h3>';
					$o .= '<table id="liststatements" border="0" cellpadding="5" cellspacing="1" class="boxaligncenter flexible">';
					$row = 0;
					foreach ($statements as $statement) {
					/// Calculate buttons
						$b = '</td><td class="button cell">';
					/// The edit button
						$b .= '<a href="index.php?action=edit_statement&amp;statement=' . $statement->getName() . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['edit'] . ']</a>';
						$b .= '</td><td class="button cell">';
					/// The up button
						if ($statement->getPrevious()) {
							$b .= '<a href="index.php?action=move_updown_statement&amp;direction=up&amp;statement=' . $statement->getName() . '&amp;postaction=edit_xml_file' . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['up'] . ']</a>';
						} else {
							$b .= '[' . $this->str['up'] . ']';
						}
						$b .= '</td><td class="button cell">';
					/// The down button
						if ($statement->getNext()) {
							$b .= '<a href="index.php?action=move_updown_statement&amp;direction=down&amp;statement=' . $statement->getName() . '&amp;postaction=edit_xml_file' . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['down'] . ']</a>';
						} else {
							$b .= '[' . $this->str['down'] . ']';
						}
						$b .= '</td><td class="button cell">';
					/// The delete button
						$b .= '<a href="index.php?action=delete_statement&amp;statement=' . $statement->getName() . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['delete'] . ']</a>';
						$b .= '</td>';
					/// Print statement row
						$o .= '<tr class="r' . $row . '"><td class="statement cell"><a href="index.php?action=view_statement_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;statement=' . $statement->getName() . '&amp;select=edited">' . $statement->getName() . '</a>' . $b . '</tr>';
						$row = ($row + 1) % 2;
					}
					$o .= '</table>';
				}
			///Add the back to main


			$this->output = $o;
			}
		}

	/// Launch postaction if exists (leave this unmodified)
		if ($this->getPostAction() && $result) {
			return $this->launch($this->getPostAction());
		}

		return $result;
	}
}
?>
